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1,891
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texts 1,891
COLLECTION
TOPIC
Science 178
Public health 81
Natural history 79
Engineering 76
Academy of Natural Sciences of Philadelphia 69
Pharmacy 69
Pathology 58
Medicine 57
Science -- Periodicals 55
Civil engineering 53
Military engineering 53
Science -- Societies, etc 48
Paleontology 28
Psychiatry 27
Astronomy 24
Materials 21
Paper making and trade 19
Municipal engineering 18
Physics 18
Wood-pulp 17
Railroads 16
cbk 16
Physiology 15
Hospitals 14
Public health nursing 14
Great Britain. Army. Royal Engineers 13
Mathematics -- Societies, etc 13
Physics -- Societies, etc 13
Agriculture 12
Surgery 11
Water-supply 11
Forests and forestry 10
Botany 9
Chemistry, Physiological 9
Dermatology 9
Geology 9
Geometry, Projective 9
Pharmacopoeias 8
Professional papers of the Corps of Royal Engineers 8
Psychology -- Periodicals 8
Chemistry 7
Chemistry, Physical 7
Pharmacology 7
Plant physiology 7
Zoology 7
Hygiene 6
Mechanics 6
Optics 6
Celestial mechanics 5
Electricity 5
Entomology 5
Mineral industries 5
Petroleum 5
Prescription writing 5
Agricultural chemistry 4
Alcohol -- Physiological effect 4
Anatomy 4
Chemical engineering 4
Geometry 4
Heredity 4
Mathematics 4
Medical jurisprudence 4
Navigation 4
Paleontology -- France 4
Pasteur, Louis, 1822-1895 4
Photography 4
Physical training 4
Physiology, Comparative 4
Psychoanalysis 4
Psychology 4
Pyrometers and pyrometry 4
Skin 4
Therapeutics 4
Blacksmithing 3
Building 3
Chemistry, Inorganic 3
Chemistry, Organic 3
Chemistry, physiological 3
Diagnosis 3
Graphic methods 3
Hygiene, Public 3
Insects 3
Medicine -- Practice 3
Metabolism 3
Mineralogy 3
Photomicrography 3
Phytogeography 3
Planets 3
Plant anatomy 3
Radio 3
Trigonometry 3
Welch, William Henry, 1850-1934 3
Algebra 2
Australia -- Fauna 2
Autopsy 2
Bacteriology 2
Biology 2
Blowpipe 2
Botany, Medical 2
Building, Iron and steel 2
Calculus 2
Cement 2
Chemistry, Analytic 2
Chemistry, Physical and theoretical -- Laboratory manuals 2
Chemistry, Technical 2
Country life 2
Dietetics 2
Dissection 2
Drugs 2
Economics 2
Electric transformers 2
Electrical engineering 2
Electrochemistry 2
Electronics 2
Encyclopedias and dictionaries 2
Equations 2
Evolution 2
Food 2
Food -- Analysis 2
Geometry -- Problems, exercises, etc 2
Geometry, Analytic 2
Geometry, Descriptive 2
Gynaecology 2
Hydraulics 2
Immunity 2
Insects, Injurious and beneficial 2
Italian poetry 2
Light 2
Literature 2
Logarithms 2
Magnetism 2
Mammals -- Anatomy 2
Materia medica, Vegetable 2
Matter -- Properties 2
Meteorology 2
Microscope and microscopy 2
Natural history -- Outdoor books 2
Nebulae 2
Nutrition 2
Paleontology, Stratigraphic 2
Pathogenic bacteria 2
Pellagra 2
Petrology 2
Pharmaceutical chemistry 2
Philosophy 2
Phonetics 2
Photochemistry 2
Physical measurements 2
Physics, Practical 2
Pigeons 2
Plane trigonometry 2
Poisons 2
Poultry 2
Probabilities 2
Prospecting 2
Proteins 2
Psychology, Comparative 2
Psychology, Pathological 2
Pumps 2
Rabbits 2
Roads 2
Sanitation 2
Senses and sensation 2
Sewage 2
Sound 2
Speech 2
Spherical astronomy 2
Spinal cord -- Diseases 2
Steam-engines -- Early works to 1850 2
Steel, Structural 2
Surfaces 2
Surgery, Plastic 2
Syphilis 2
Technology 2
Therapeutics, Physiological 2
Trees 2
Tuberculosis 2
Abitianus 1
Actuarius, Johannes 1
Adaptation (Biology) 1
Aeronautics 1
Agriculture -- Economic aspects United States 1
Alcohol 1
Alexander, of Aphrodisias 1
Amalgamation 1
Amputation 1
Amusements 1
Anatomy, Pathological 1
Andromachus (Senior) 1
Anesthesia in obstetrics 1
Anesthetics 1
Aphorisms and apothegms 1
Apollonius, Dyscolus, 2nd cent 1
Archelaus (philosophus) 1
Arches 1
Aristotle 1
Arithmetic 1
Arsenic -- Toxicology 1
Ascomycetes 1
Assaying 1
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